- What OK-ROOF Actually Is
- Who Issues It and Who Administers the Exam
- Eligibility to Sit for the Endorsement
- Exam Format, Timing, and Scoring
- The Six Content Domains
- Fees: Registration, Endorsement, and Renewal
- The Companion Roofing Business and Law Exam
- Who Actually Needs This Credential
- Building a Domain-Aware Study Plan
- Frequently Asked Questions
- OK-ROOF is issued by the Oklahoma Construction Industries Board; PSI administers the $92 technical exam.
- The test has 50 scored questions (plus up to 10 unscored) in 2 hours 30 minutes, and you need 70% to pass.
- It's computer delivered, open book, and allows a silent nonprinting, nonprogrammable calculator.
- You must also pass a separate 50-question Roofing Business and Law exam to hold the endorsement.
What OK-ROOF Actually Is
OK-ROOF stands for the Oklahoma Roofing Contractor Commercial Endorsement Examination - a state-recognized credential specifically tied to performing commercial roofing work in Oklahoma. It is not a generic industry certificate you can earn online in an afternoon. It's a regulatory endorsement layered on top of an existing Oklahoma roofing registration, meaning it functions more like a professional license add-on than a voluntary badge.
If you're searching for the basics of what this credential covers and why it exists, this page is the natural companion to broader explainers like What Is OK-ROOF? and OK-ROOF Meaning. Here, we're focused specifically on what the certification requires, how the exam is structured, and what it actually takes to qualify.
Who Issues It and Who Administers the Exam
The Oklahoma Construction Industries Board (CIB) is the governing body that issues the commercial endorsement itself. However, the actual technical examination - the 50-question test covering roofing systems knowledge - is administered by PSI, a third-party testing vendor that runs the computer-delivered exam sessions.
This split matters for candidates: the CIB handles registration, business documentation, insurance verification, and the endorsement decision, while PSI handles scheduling, proctoring, and score reporting for the technical exam. Understanding this division helps when you're troubleshooting scheduling issues versus eligibility questions - they go to different offices.
Eligibility to Sit for the Endorsement
Before you can even schedule the PSI exam, Oklahoma requires several conditions to be met. These aren't optional prerequisites - they're gatekeeping requirements verified by the CIB before endorsement is granted.
- Minimum age of 18. No exceptions.
- An active Oklahoma roofing registration in good standing. The commercial endorsement builds on top of this base registration; you cannot get the endorsement without it.
- A designated qualifying party who is actively engaged in the business - this is the individual whose competency the exam is essentially certifying on behalf of the company.
- Business registration with the Oklahoma Secretary of State. Sole proprietors and corporations alike must have their business entity properly filed.
- Proof of $1 million in general liability coverage plus workers' compensation coverage documentation.
For a full walkthrough of how these pieces fit together - including documentation order and common rejection reasons - see OK-ROOF Requirements 2026: Eligibility, Prerequisites & How to Qualify.
Key Takeaway
Don't schedule your PSI exam before your qualifying party designation and insurance documentation are in order - the CIB will not issue the endorsement on exam success alone if the paperwork side is incomplete.
Exam Format, Timing, and Scoring
The commercial roofing technical exam consists of 50 scored questions delivered in a 2-hour-30-minute window. To pass, you need to answer at least 70% correctly. The exam is computer delivered through PSI testing centers and is open book, meaning approved reference materials can be used during the session - though knowing where to find information quickly matters more than having it memorized cold.
A silent, nonprinting, nonprogrammable calculator is permitted, which is relevant for load, slope, and material calculation questions. PSI may also insert up to 10 unscored experimental questions into any given exam session. These are used to evaluate future test items and are indistinguishable from scored questions, but importantly, the time spent on them does not count against your 2.5-hour limit - so the clock effectively accounts for this built-in buffer.
| Exam Attribute | Detail |
|---|---|
| Scored Questions | 50 |
| Possible Unscored (Experimental) Items | Up to 10 |
| Time Limit | 2 hours 30 minutes |
| Passing Score | 70% |
| Format | Computer delivered, open book |
| Calculator Policy | Silent, nonprinting, nonprogrammable only |
| Exam Fee | $92 |
For a deeper breakdown of exactly what 70% means in raw question terms and how scoring is calculated, read OK-ROOF Passing Score 2026: Exactly What You Need to Pass. If you want to understand how difficult the exam tends to be relative to other trade endorsements, How Hard Is the OK-ROOF Exam? Complete Difficulty Guide 2026 covers that in detail, and OK-ROOF Pass Rate 2026: What the Data Shows looks at outcome data.
The Six Content Domains
The technical exam is organized around six domains, each representing a distinct body of commercial roofing knowledge. Low Slope Roofing is the largest domain by question weight, reflecting how dominant low-slope systems are in Oklahoma's commercial building stock - think membrane roofs, built-up systems, and single-ply applications on flat or nearly flat commercial structures.
Domain 1: General Roofing Knowledge
Foundational terminology, material categories, and roofing system fundamentals that underpin every other domain.
- Roofing material classifications and terminology
- Basic system components and their functions
Domain 2: Low Slope Roofing
The largest domain on the exam, covering the systems most common on Oklahoma commercial buildings.
- Membrane systems and installation sequencing
- Built-up and single-ply roofing distinctions
Domain 3: Architectural Metal Roofing Systems and Sheet Metal Flashing
Covers metal panel systems and the flashing details that prevent water intrusion at transitions and penetrations.
- Panel profiles and seaming methods
- Flashing details at edges, valleys, and penetrations
Domain 4: Moisture and Energy Control
Focuses on vapor barriers, insulation strategy, and how moisture management interacts with energy performance.
- Vapor retarder placement logic
- Insulation types and thermal performance considerations
Domain 5: Repairs and Reroofing
Tests judgment around when to repair versus replace, and how to handle tear-off and recover scenarios.
- Diagnosing failure points in existing systems
- Reroofing over existing substrates versus full tear-off
Domain 6: Safety
Jobsite safety practices relevant to commercial roofing crews and fall protection standards.
- Fall protection systems and anchor points
- General jobsite hazard awareness
The current PSI content references point to the 2025 NRCA Steep Slope manual, so candidates should confirm they're studying from the correct edition rather than an outdated reference. For a domain-by-domain study strategy with weighting guidance, see OK-ROOF Exam Domains 2026: Complete Guide to All 6 Content Areas.
Fees: Registration, Endorsement, and Renewal
Money matters here, and the fee structure has several distinct line items that candidates often conflate. Understanding them upfront avoids surprises during the application process.
- Initial registration: $75
- Initial commercial endorsement: $230
- Exam fee (paid to PSI): $92
- Annual renewal: $75 registration + $100 endorsement
Starting January 1, 2027, renewing the commercial endorsement will also require completing 4 continuing education hours annually - a new requirement candidates should plan for even if their initial endorsement predates that date. For the complete cost breakdown including how these fees stack over multiple renewal cycles, see OK-ROOF Certification Cost 2026: Complete Pricing Breakdown.
The Companion Roofing Business and Law Exam
OK-ROOF candidates don't just take one exam. A separate 50-question Roofing Business and Law examination is also required for the commercial endorsement. This exam focuses on the regulatory, contractual, and business-operations side of running a roofing company in Oklahoma - separate from the hands-on technical knowledge tested in the domains above.
Because both exams are required, candidates should plan study time for two distinct bodies of knowledge rather than assuming the technical domains cover everything. Treat them as two separate preparation tracks with their own reference materials and review schedules.
Who Actually Needs This Credential
The commercial endorsement is relevant to roofing business owners, qualifying parties within roofing companies, and contractors who want to legally bid and perform commercial roofing work in Oklahoma rather than sticking to residential jobs. Commercial general contractors, property management companies, and building owners commonly require proof of this endorsement before awarding roofing contracts, since it signals both technical competency and regulatory compliance.
If you're weighing whether pursuing the endorsement makes sense for your business trajectory, Is the OK-ROOF Certification Worth It? Complete ROI Analysis 2026 walks through the practical tradeoffs, and OK-ROOF Jobs covers the kinds of roles and contracts where the endorsement is commonly expected. For income considerations tied to commercial endorsement work, see OK-ROOF Salary Guide 2026: Complete Earnings Analysis.
Building a Domain-Aware Study Plan
Because Low Slope Roofing carries the heaviest weight, it deserves the largest block of dedicated study time - not an equal split across all six domains. A practical approach is to front-load early weeks on Domain 2, then layer in Domains 3 and 4 (metal systems and moisture control) once foundational terminology from Domain 1 is solid, saving Domains 5 and 6 for a final review pass since repair judgment and safety rules are easier to retain closer to test day.
Foundations and Low Slope Systems
- Review general terminology (Domain 1)
- Begin deep study of membrane and built-up systems (Domain 2)
Metal Systems and Moisture Control
- Study flashing details and panel systems (Domain 3)
- Cover vapor barriers and insulation logic (Domain 4)
Repairs, Reroofing, and Safety
- Practice tear-off versus recover decision scenarios (Domain 5)
- Review fall protection and jobsite safety rules (Domain 6)
Mixed Review and Business/Law Exam
- Run full-length timed practice sessions
- Shift focus to Roofing Business and Law content
For a structured week-by-week plan with more detail on pacing and reference materials, see OK-ROOF Study Guide 2026: How to Pass on Your First Attempt. You can also run realistic timed sessions on our practice test platform to get comfortable with the pacing before test day.
Frequently Asked Questions
It's best described as a state-issued commercial endorsement layered on top of an existing Oklahoma roofing registration, administered through the Oklahoma Construction Industries Board with the technical exam delivered by PSI.
There are 50 scored questions, and PSI may include up to 10 additional unscored experimental questions that don't count toward your score or your time limit.
Yes, but only a silent, nonprinting, nonprogrammable calculator is permitted during the computer-delivered, open-book exam session.
Yes. A separate 50-question Roofing Business and Law exam is also required for the commercial endorsement, in addition to the technical roofing exam.
Starting January 1, 2027, the commercial endorsement will require 4 continuing education hours annually as part of the renewal process.
For related definitional deep dives, you can also check out What Does OK-ROOF Stand For?, What Is A OK-ROOF?, and What Does OK-ROOF Mean? - each covers a slightly different angle on the same Oklahoma commercial roofing endorsement discussed here. If you're just getting started, browse our full OK-ROOF practice exam library or explore OK-ROOF Training options before you commit to a testing date.